The stone wall at the Haines Sheldon Museum was torn down recently after rot was discovered in its wood interior. Photo by Natalie Helms.

Replacing gutters at the Haines Sheldon Museum revealed 30 years of water damage to accessory walls, inches from the building’s main structure.

Museum director Helen Alten said a crew worked to replace the museum’s roof and gutters last week and found heavily rotted wood.

“The gutter water for 30 years went…